https://www.dxzone.com/dx33875/ft-857d-serial-and-sound-card-interface.html
FT-857D Serial and Sound Card Interface - Radio Equipment/HF Transceivers/Yaesu FT-857 | The DXZone
A Simple Serial and Sound-Card Interface for the Yaesu FT-857D using an FT232R USB-to-serial bridge chip.
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